I must have gotten a older style faucet, Im not complaining, I got two for a great price, It's the Eurodisk style. My question is "what size and type of fittings do I use to attach to the chrome looking ridged supply lines that extend out of the base of the faucet about 10" They look to be 1/4 to 3/8 inch diamater. I am assuming that it would be a compression fitting, but was hoping someone would know exactly what I needed.
Thanks

Assuming that the rigid supply lines will not reach the stop valves, use 3/8 to 3/8 compression flexible supply line. A 10' is probably the shortest you will be able to find. Cut off any excess of the rigid supply line for a neat fit